130
5. PARAMETERS
5.7 (N) Communication operation parameters
• The communication check time by query communication includes a no-data time (3.5 bytes).
This no-data time differs according to the communication speed, so take this no-data time into consideration when setting
the communication check time.
Example: RS-485 terminal communication,
Pr. 539
= "0.1 to 999.8s"
Check start
Time
Communication
check counter
Pr.539
Converter unit (slave)
Converter unit (slave)
PLC (master)
PLC (master)
Query Message1
Query Message2
Data absence time
(3.5 bytes or more)
Response Message1
Response Message2
Fault
(E.SER)
Check start
Time
Communication
check counter
Pr.539
Query Message2
Fault
(E.SER)
Data absence time
(3.5 bytes or more)
Query Message1
Query communication
Broadcast communication
ON
OFF
ALM
ON
OFF
ALM
Converter unit (slave)
Converter unit (slave)
PLC (master)
PLC (master)
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...